Woodworking machine



Fm. s, 1927. S W. GREEN.

WOODWORKING MACHINE Patented Feb. 8, i927.4 I y g UNiTED STATESwPa'iizu'i` oi-"i-icii-z.v

woonwonxme MACHINE.; Application sied August 2o, i923. serial No.658,221.

My invention has for an object the conremoved from the sliding carriageand from struction of a wood-working machine espethe adjustable frameitself, with the result cially ladapted for pei-forming operations of.that the vibration ot the motor as well as its sawing, such as crosscutting. mitering and weight is removed from the operating parts, 5kindred operations, and which, by suitable not only in their eiiect uponthe operation of l adjustment. may also be adapted for jointthe slidingcarriage carrying the cross cut ing and rip sawing, the machine beingselfsaw, but also in respect to burdening the adcontained and havinguniversal capacity for justable frame with an objectionable load doingwood work which involves sawing and which tends to interfere with theproper adjointer work. justmentabout the vertical axis and cause Theobject is furthermore to so construct `iindue wear of the adjustableparts. v-

thc machine that it is portable and easily Considering my invention more`particutransferred and usable at'the place where larly as to theconstruction of the machine', I the work is to be done. provide asuitable Jframe preferably adjust- 70 Heretofore, in machines of similarcharable about a vertical axis, said frame having acter, it has beencustomarv to mount the a rearwardly extending guide arm carrying crosscut saw upon an adjustable trame at its rear c nd a guide pulley, asliding carf ed to the saw mandrel has been suppprted at extendingguidearm ofthe adjustable traine,

which was movable in the direction of the riage carrying a saw journaledthereomthe plane of the saw, said frame being carried mandrel of whichis provided witha pulley upon a vertical adjustable Iturn-table orsupandsaid 'ding carriage guided upon the port,vwhereby it could be adjustedin ahorif adjustable frame adjacent to its vertical zotal plane about avertical axis, but in all axis. and also having rearwardly extending ofthese cases, the motor which has been beltguiding means guided upon therearwardly imv 'a great distance iro 'the vertical axis about saidcarriage also provided with a pulleyoat Y which the frame is adjusted,the motor its rear end and said adjustable frame haveither being securedto the sliding frame, ing a vertical shaft coincidentwith itsverticarrying .the cross cut saw or to a rearwardly cal axis andprovided at the top with a drivextended arm at a great distance from theing'belt pulley, said pulley belted to the pul- 85 vertical axis of theframe, the former imleyon the saw mandrel by an endless belt, posinggreat weight upon the sliding frame one portion of which passes aboutthe pulley and interfering with the freedom of operaon the x end of therearwardly extending tion, and the latter producing a vibration `guidearm and the other portion extending which interferesmore or less withthe accu# about the pulley at the rear of the adjustf 99 I racy ot thesaw cut. It has been found that able frame, the construction being suchthat the great weight of the motor, when driving the carriage and thesaw carried thereby tbe perating belt at a high speed and when may bemanually adjusted without moving arranged tt a distance from thevertical' axis the driving belt pulley or its shaft and at' o theadjustable frame, causes considerable 'the `Sametime maintaining theouter trans- 95 wear upon the guides of the frame and shortmittingconnection between the driving be t ens the effective life of themachine as a pulley andthe pulley on the mandrel shaft whole. ybycompensationin the belt transmission due By my improvements, theseobjections to Ato the movement ot the guide pulley onl the existingwoodworking machines are gvercarriage being exactly equal to themovement 10 come, as the entire-weight lof the motor isl of the pulle onthe saw mandrel; and my lremoved trom the carriage and Jfrom theimproveme t further comprehendsthe posirearwardly extending arms beyondthe cartioning-of a motor upon the base o r body o riage and is posi'cned upon the Vbase frame the machine and mechanicallyconnected to otthe machine with suitable power transdrive the vertical shaft, wherebyits weight 105 mission devices extending upwardly for ro-l is entirelyremoved from the adjustable cartating a driving belt wheel arranged atthe ri'age and from the adjustable -frame. While upper part of theadjustable frame and slidthe motor may ber-.of any suitable construcingcarriage, from which belt wheel powerv tion, I prefer, in this presentinvent1on, to

is transmitted through a belt to the cross cut employ an exploslve motorwhich .may 'be 11 saw mandrel v( and to the rip sawY and jointeroperated without the necessltyof requiringa.

' when used), whereby` its weight isV entirely source of electricenergy-Where electric energy is available, the motor may be elec- In thehead `of the sliding vcarriage is tric, if so desired. journaled amandrel 16 carrying, at one y my improvements, no actual strain is end,the cross cut saw 17, and at the other put upon the adjustablecarriage'by reason end a band wheel 19. It will further be of vtheweight of the -motor and any vibra seen that the carriage alsoAcomprises two tion which may becaused by the motor and rearwardlyextending rods 14 slidable its transmission gear between it and thethrough the guides 11 on the adjustable vertical shaft is dissipated inthe base of the "frame, said rods being secured at their rea'r machineand does not extend to the driving ends in a transverse frame 15 which`is belt wheel at the top of the adjustable frame guided upon therearwardly extending guide and from which the woodworking parts of arm9. The frame 15' is extended to one Side the machine are driven. andcarries thereat the pulley 25.- It will be In my construction, theadjustable carseen that the carriage is guided'in the guides riage hasno other work to perform than l1 1 adjacent to the vertical axis of theframe such as is put upon it by the action of the 4, and is also guidedupon the rear end of the Saw and the adjustment of thebelt for keep-`guide arm 9, so that it h as widely-separated ing it under normal oruniform tension. points of guiding support. 4 .My-invention alsoembodies other details Secured within the base or body 2 of the ofconstruction which, together with the feamachine and preferably adjacentto the floor, tures above referred to, will be better unis a motor 22which, in the preferred form, 8 derstood -by reference to the drawings,in is an explosive or gasoline motor. The genwhich: J eral constructionof this motor may be ac- Fig. 1 is a side elevation of a woodworkcordingto any suitable type now found ing machine embodying my invention.; Fig.upon the market. 2 is a transverse section of a portion of the 40 is avertical shaft extending upward .91 same, showing the specialconstruction -or coincident with the axis of the adjustable mounting 0fthe adjustable frame and the frame4 and being journaled at the uppermanner of transmitting power through the end of said frame in a ballbearing 10, and vertical shaft; Fig. Sis a plan view of my imalsosuitably journaled at its lower end in proved machine; Fig. 4 is adetail view of the a ball bearing 21 secured tothe main frame. 9clamping means for locking the' adjustable Preferably, the said shaft40. is not in concarriage against movement; F1g. 5 is -a dlatact withthe upwardly projecting pedestal grammatic illustration of thearrangement 3 nor with the adjustable frame 4, except of the drivingbelt when the cross eut saw is through its fball bearing 10, and forthis being driven from the driving pulley; and reason, the said shaftrunswith little or no 10* Fig. 6 is a similar diagrammatic View4showappreciable friction. At the upper -end of ing the rear arrangementof the belt'when this vertical shaft 40 is secured adriving driving therip saw and jointer devlces are belt pulley 24 which rotates in ahorizontalv being operated. l plane. Secured -to the lower end of theshaft 2 is the. main frame or bed of the machme 40 is afclutch member 41which engages lthe 105 and may be of any suitable construction. 3 otherpart of the clutch member formed is an upright pedestal upon which thevframe within the belt pulley'42, and with which it J 4 Visseeured andadjusted with capacity to normally 'engages under the action of a"swingabout a vertical axis, the adjustment spring 45. 43 is a beltpassing about the being permitted-by the turn-table 5 andthe pulley 4 2of the shaft 40 and also about 'a 110' extent of the adjustment beingshown by belt wheel 44-on the shaft of theemot'or 22, the scale `6 uponone portion of Athe turnas will be clearly understood by reference totable and a pointer on the other portion. Fig. 1. It'will now be seenthat when `the The adjustable frame 4 may be clamped in motor 22 isrunning and the clutch 424 is afny suitable positionof adjustmentfby ain action, the Ashaft 40 is rotated together-115" clam 5. The'adjustable frame 4` is prowith its driving pulley 24. When the clutchvide with a rearwardly extending arm 7 41 is depressed by. any suitablemeans having at its rear enda hub-8 which sup- (not shown the motor 22may continue to ports and carries the rear end of a guidearm run withoutoperating thel shaft 40 or its 9, and said rear end of the frame andguide pulley 24, and Athis'condition may be pro- 1.20 y

arm are provided with al bracket 26 upon vided whenever it isnecessaryto startup whose free end is journaled a belt pulley 27'. the motor.when putting the machine into The frame 4 is also provided, on oppositeoperation. It may also be resorted to when sides of the guide arm 9,with guides 11 for the cross cut saw is not intended 'to be used theadjustable carriage 12 whichcarrles the and at` such times as the beltfor driving 125 saw 17, saidguides being on opposite sides lh'e erosscutsaw is to be adjusted for driv-` of the axis of the frame 4. Thecarriage 12 ing the-r1p saw and the .jointen I 1s provided at theforward end-with a han- The belt 28, at one end, passes about the Y dle13 bywhich it may be grasped and driving belt pulley 24, as at 29, andat the shifted back and forth by the operator. other end, about the beltpulley 19 on the 13 -undue loss by friction.

about the pulleys ly no amount 'v displace it from its Y ments of thecarriage,

such that the belt length from saw mandrel shaft 16, as at 30, and thein-l of the belt are looped 25 and 27, as clear y shown in Fig. Thetension maybe assured by the tension adjusting devices 23 which permitreasonable adjustment of the pulley 27 upon its support 26.

It will be noted that the pulleys 19,l 25 and 27 are all arranged inthe` same vertica plane and the perimeter of the driving pulley 24also-lies in the said plane, and for this reason, the belt 28 travelswith accuracy t-ermediatel portions and has no tendency to jump thebeltpul- Y leys. r The belt in its the horizontal loop 29 passing aboutdriving belt pulley24 is given a q connection with its passage about thepulleys 25' and 27 (Fig. 3), and while the pulline side of the pulley`24 is outside of the plane of the pulleys 19, 25 and 27, nevertheless,the pull of the belt upon the pulley 27 operates properly in view o thefact that the belt is fed to the pulley 27 in the plane of its rotation,and consequentof pulling by the pulley 24 wil u uulley 27.

It will now be un erstood that as the earriage 12 is moved to the left,the pulleys 19 and 25 move with it, and as they bot move to the sameextent, the additional belt length required to bridge the distancebetween the pulleys 19 and 27 is provided by the corresponding changesin the distance between the driving pulley 24 and pulley 25 on thecarriage, thereby insuring the belt remaining at the same vtension forall adjustand, moreover, allowing the carriage to be shifted without inany manner atleet-ing the real transmis'ion o power from the motor tothe saw mandrel.

In connection with the capacity justment, it will be noted that thepulley 25 bears a relation to the'pulleys 24 'and 19,

to the pulley 25, the pulley 25 are substantially parallel and are alsoparallel to the guide 9 for the carriage, and therefore, no amount ofadjustment of the latter will materially affect the tension of the belt,so thatf the transmission is very eflicient andat the same time capableof transmitting the power required without and from the pulley 19 to 31is av table for :supporting4 the to be sawed and said table may bevertically relatively to the main frame of the machine and the saw 17 bymeans of s upporting lscrews 32 and worm wheel gearng 33, operated byhand wheel 34. Anyother suitable manner of supporting an adjusting thetable 31 may be employed, if' so dcsired, and I in no wise restrictmyself in this respect.

It'will now may-operate upon the table and`by be understood that the sawthe material resting upon proper adjustment of the of the beltand thedepth of the saw tions that when the table is lwholly below f saw 17 asto insure 1 saw shaft 36 is h a jointer 38- of any lcutter thereof beingrotated by a for adl the pulley 24 ment means and jthe mandreladjust-able frame 4, the saw cutting may be produced at right angles orat any other angle to the length of the material desired; cut, whetherentirely throu,c`,h or partlythrough the material may ment of the table.

35 represents a rip-saw and is secured to l a shaft 36 suitablyjournaled on the main frame, so that the saw 1s 4arranged below thetable 31 and by lowering the table sutlicient-A ly, may projectI throughthe same for becoming operative for ripping lumber guide The'saws uponthe table. ticiently separated as to their vertical'posiadjusted inconthe saw 17, the rip-saw is the table, and when the table operationwith the rip-saw, lowered below the cross cut the material being rippedto be free of manipula ion without contact with the saw V17. The otherend of/the ripprovided with abelt pulnection with is adjusted for it issuiiciently At the opposite side of the main frame 2 to which therip-saw 35 is located, I arrange suitable construction, the belt wheelis so located with-respect to the of the rip-saw,

these pulleys over one end, the both at the same time 39 which pulley 37ing between other may drive them in opposite directions, as hasheretofore been customary in machines of this class.

It will now be understood that lif the ripsaw and the jointer is to beoperated instead of the cross-cut saw, 4 is swung around its verticalaxis on pedestal 3 for 90 and is secured in such position of adjustmentby the clamping device 5 When this position is assumed, the pulleys 25and 27 will be in the same vertical plane with thev pulleys 37 and 39,and thereupon the'looped end 30 of the engaged from the pulley 19 andapplied about the pulley 37 and continuing upward under the pulley 39,as indicated in Fig. 6. 'Vhen so `adjusted, the operation of the motor22 will be to drive the rip-saw an thel jointer instead of operating thecross cut saw 17 Any adjustment as to tension of the-belt may beprovided by 23, and as the belt is partly. guided by the pulley 25 vonthe slidingv carriage, the same is locked by asuitable clamp 12a (Figs.1'and 4) When adjusting the belt from 19 to the pulleys 37 and 39, thenecessary slack in the belt mayreadily be obtained the belt is removedfrom the 19 and 25 for the pulley 19 2.3, and when pulleyV 19 or fromboth pulleys ready freeing of the belt from 17 and 35 are suf,-4

the adj ustable frame belt 28 will be dis-v against movement thereof. Itmay then be vbe insured by the proper adjust j vthat a belt passthe adjustthe pulley i lplaced in position about the pulleys 37 and 39 andafter being again adjusted to the pulley 25, the carriage 12 would bepushed back into tension position, as shown, and clamped or locked by-the clamping device 12a' or other suitable means; and thereafter, theWorking tension be provided by the adjust- I ing device 23 for shiftingthe tension pulley 17 to the desired extent.

It will thus be seen that the machine as a whole, constitutes auniversal wood working f machine but the special improvements there- 1nconstituting the basis of my invention is more particularly directed tothat portion of the machine in connection with the cross out saw supportand its operating means.

I have shown the construction of my ma- .ehine in the preferred form,but it will be understood that in a more generic sense, the 'inventioncomprehends a motor of any desc ription'arranged on the base or bedframe independent of the adjustable frame and sliding carriage combinedwith the arrangement of pulleys and belts for driving saws and jointersfrom the upper end of the adjustable frame 4, and with further provisionof power transmitting connections through the vertical or uprightpedestal and the adjustablev frame supported thereon, whereby the lattermay be adjusted about the bearing transmitting connections Withoutinterfering with the power transmission from the motor to the saws andjointer. .It will now be apparent that I have'devised a novel and usefulconstruction which embodies the features o f advantage enumerated asdesirable, and while I have in the` lpresent instance shown anddescribed the preferred embodiment thereof which. has been found inpractice to give satisfactory and reliable results, it is to beyunderstood that I do not restrict myself to the details, v as the sameare susceptible of modification 'n various particulars without`departing he spirit or scope of the invention. Having now described myinvention, what l desire to secure by Letc aim as new and ters Patent,is: i

Ina woodworking machine, the combiith a'lixedmain frame and a tablepporting the material ,of an adjustable frame extending .e the main`fraln'e Aand movable about a vertical axis, av horiz ntally recirocable carriage guided upon and movab e with said adjustable frame, asaw and mandrel therefor journaled onv and transversely of the carriagewhereby the saw revolves in a plane rallel to the line of movement ofthe car- ;f1 age, means to provide a relativeadjust- 'l ment verticallybetween the table and saw, a motor supported independently of the'adjustable frame and carriage, and power transmission means operatedbythe motor for driving the saw mandrel including a` vgulded endextending about to be operated driving pulley .arranged at a higherelevation than the carriage and substantially at the verticalaxis of theadjustable frame, a vertical shaft extending from the main frame andmotor substantially` in alinement with Ithe axis of the adjustable framefor driving the pulley, connections from the. driving wheel to themandrel which permits free reciprocation of the carriage Whilemaintaining the power transmitting connection.

In a woodworking machine, the combination with a iixed main frame andtable for holding the material to be opera-ted upon, of an adjustableframe extending above the main frame and movable about a' vertical axis,a horizontally reciprocable carriage upon and movable with saidadjustable frame, a saw and mandrel therefor journaled on andtransversely of the carriage whereby thesaw revolvcs'in a plane parallelto the line of movement of thel carriage, means to provide a relativeadjustmentver-l tically between the table and saw, a motor supportedindependently `of the adjustable frame and carriage, power transmissionmeans operated bythe motor for driving the saw mandrel including rangedclose to the axis of oscillation o f the adjustable frame, a pulley onthe saw mandrel arranged to one side .f of the driving pulley, a guidepulley on the rear of th'e carriageand movable with it and also a guidepulley on the adjustable frame, ranged to the opposite side 'of thedriving pulley; and an endlessbelthaving one looped the horizontaldriving looped and extending pulley and 'the other andv compensatingbelt both ar- A about theIsaw mandrel pulley and also having its twointermediate portions respectively looped about -the pulleys on theearriage and adjustable frame, said transmission means permitting thefree reci rocation of the carriage while maintaining t e powertransmitting connection.

3.. The invention according to claim 1, wherein further, there isprovided clutch means on the main frame between the motor Iand thevertical shaft.

4. In a woodworking in a relatively ixedposition thereon, comblned witha table'for supporting the maan adjustable frame 1 of about the verticalaxis while `one side of the axis of the adjustable frame and a jointeris arranged at the other -side thereof, separate driving pulleys areprovided for the rip-saw and jointer revolving in the same verticalplane whereby the lbelt may at the same time driveboth the rip-saw andjointer, and also, vided with capacity for being adjusted above andbelow the upper cutting ledge of the ripsaw whereby it may be adjustedfor cooperation with the rip-saw or with the sawy on the slidingcarriage.

6. Ina woodworking machine, a stationary mainframe and a lmotor securedto' said frame near the ground and so'as to be held in arelatively fixedposition thereon, combined with a table for sup'porting the material tobe sawed, a 4rip-saw extendingr upward through the table, an adjustableframe extending above the level of the table and motor and supported bythey main frame with provision for adjustment about a vertical axis andrelatively with' respect yto the table and motor, a sliding carriagereciprocable horizontally upon the adjustable frame, a

.saw and mandrel journaled in the sliding carriage, power transmittingconnections from the motor upward and to .the saw man- 'drel'embodyingvcompensating means perm1t-- 4 lting sliding of the carriageand adjustment mandrel of the carriage thereof about the vertical axiswhile maintaining operative the power transmission from the motor to thesaw, said power transmitting connections comprising a vertical' of theadjustable level of the carriage at its top and arrangedltoV beoperated. by the motor at'the bottom, above the carriage rotated'by thevertical shaft, mechanical compensating connections between therotatable member and the saw n to permit the reciprocation'of thecarriage connection for the saw thereof,

the adjustable table is pro-- ment to connect theVv power a rotatablemember while maintaining a means for driving the rip-saw, and means toadjust the table vertically relatively to the rip-saw. A

7 In a woodworking machine, the combination of av main frame, anadjustable frame -movableabout a vertical axis and having a rearwardextension, a power shaft having a pulley mounted upon said adjustableframe, an idler pulley mounted Iupon the rearward extension of theadjustable frame and arranged to swing with the frame about its verticalaxis, a reciprocable carriage associated with and supported by'saidadjustable frame so as to be guided in one plane only, atool shafthaving a pulleymounted on the forward part of said carriage, an idlerpulley on the rearend of the carriage, two tool shafts mounted in themain frame having pulleys, and a belt adapted in one position ofadjustment to have one end looped about the power shaft pulley and theother end' looped about the tool shaft pulley of' the carriage and theintermediate portions respectivelylooped about the idler pulleys and inanother position of adjustment to connect the idler pulleys, the powershaft pulley and the pulleys on the two tool shafts mounted in the mainframe.'

8. In a woodworking machine, the combination of a main frame; a secondframe consisting of a post and an extending arm rotatably mounted uponguides upon said post; a guide rod mounted between said post and saidarm; rods slidably mounted in' said guides; a slidable brace having anidler pulley mounted on said guide rod and connecting two ends of saidrods; a cross-head connecting the other -two ends of said rods;

positioned inl sald cross-head having a' pulley and a saw oppositelydisposed thereon; an idler pulley mounted upon said arm; a power shaftmounted in 'said post; a power pulley for said shaft; two :cool shaftshaving pulleys mounted in the main frame ;v

a tool shaft .the main frame;4

and a belt adapted in one position of adjust- 0 shaft pulley, the idlerpulleys and the tool shaft pulley mounted in said cross-head, and inanother position of adjustment to connect the power shaft pulley, theidlerpulleys andthe pulleys on the two shafts mounted in the main frame.In testimony'` of which invention, Y unto'set' my hand. t

@SAMUEL w.

'I here-

